// Private Methods
private void addSimpleMovesUpside(List <Move> i_MovesList, Board i_Board)
{
if (MoveValidator.IsInBorders(i_Board, this.Location.X + 1, this.Location.Y + 1) && i_Board.GameBoard[this.Location.X + 1, this.Location.Y + 1].CurrentPiece == null)
{
i_MovesList.Add(new Move(this.Location.Y, this.Location.X, this.Location.Y + 1, this.Location.X + 1));
}
if (MoveValidator.IsInBorders(i_Board, this.Location.X + 1, this.Location.Y - 1) && i_Board.GameBoard[this.Location.X + 1, this.Location.Y - 1].CurrentPiece == null)
{
i_MovesList.Add(new Move(this.Location.Y, this.Location.X, this.Location.Y - 1, this.Location.X + 1));
}
// Capture moves
if (MoveValidator.IsInBorders(i_Board, this.Location.X + 2, this.Location.Y + 2) &&
i_Board.GameBoard[this.Location.X + 2, this.Location.Y + 2].CurrentPiece == null)
{
if (i_Board.GameBoard[this.Location.X + 1, this.Location.Y + 1].CurrentPiece != null &&
i_Board.GameBoard[this.Location.X + 1, this.Location.Y + 1].CurrentPiece.Side
== ePlayerSide.Down)
{
i_MovesList.Add(new Move(this.Location.Y, this.Location.X, this.Location.Y + 2, this.Location.X + 2));
}
}
if (MoveValidator.IsInBorders(i_Board, this.Location.X + 2, this.Location.Y - 2) &&
i_Board.GameBoard[this.Location.X + 2, this.Location.Y - 2].CurrentPiece == null)
{
if (i_Board.GameBoard[this.Location.X + 1, this.Location.Y - 1].CurrentPiece != null &&
i_Board.GameBoard[this.Location.X + 1, this.Location.Y - 1].CurrentPiece.Side
== ePlayerSide.Down)
{
i_MovesList.Add(new Move(this.Location.Y, this.Location.X, this.Location.Y - 2, this.Location.X + 2));
}
}
}
// Returns a list of all possible moves
public List <Move> GetPossibleMovesList(Player i_Player, Board i_Board, ref bool capturePossible)
{
List <Move> movesList = new List <Move>();
if (MoveValidator.IsPieceHaveMoves(i_Board, this))
{
addNonKingsMovesToList(i_Player, i_Board, movesList, ref capturePossible);
if (this.IsKing)
{
addKingsMovesToList(i_Player, i_Board, movesList, ref capturePossible);
}
}
return(movesList);
}
// Returns a capture move from all possible moves of all pieces
private Move findCaptureMove(Board i_Board, List <List <Move> > i_AllMovesList)
{
foreach (List <Move> list in i_AllMovesList)
{
foreach (Move move in list)
{
if (MoveValidator.IsCaptureMovePossible(this, i_Board, move))
{
return(move);
}
}
}
return(null);
}
private static bool isSimpleMovePossible(Player i_Player, Board i_Board, Move i_Move)
{
bool isPossible = false;
Piece movingPiece = i_Board.GameBoard[i_Move.FromRow, i_Move.FromCol].CurrentPiece;
if (movingPiece != null)
{
isPossible = isMoveSimpleDiagonalLine(i_Player.Side, i_Move);
// if king- also check opposite direction
if (movingPiece.IsKing)
{
ePlayerSide oppositeSide = MoveValidator.GetOtherSide(i_Player.Side);
isPossible = isPossible || isMoveSimpleDiagonalLine(oppositeSide, i_Move);
}
}
return(isPossible);
}
private bool checkKingCapture(Board i_Board, int i_Direction, Move i_Move)
{
bool captureMove = false;
if (MoveValidator.IsInBorders(i_Board, i_Move.ToRow, i_Move.ToCol))
{
if (i_Board.GameBoard[i_Move.ToRow, i_Move.ToCol].CurrentPiece == null)
{
if (i_Board.GameBoard[i_Move.FromRow + 1, i_Move.FromCol + i_Direction].CurrentPiece != null)
{
if (i_Board.GameBoard[i_Move.FromRow + 1, i_Move.FromCol + i_Direction].CurrentPiece.Side == MoveValidator.GetOtherSide(this.Side))
{
captureMove = true;
}
}
}
}
return(captureMove);
}
// Returns true if the given move is a capture move
private bool checkCapture(Board i_Board, int i_Direction, Move i_Move)
{
// check if destinations is in board's borders
if (MoveValidator.IsInBorders(i_Board, i_Move.ToRow, i_Move.ToCol))
{
Piece pieceToBeCaptured =
i_Board.GameBoard[(i_Move.FromRow + i_Move.ToRow) / 2, (i_Move.FromCol + i_Move.ToCol) / 2].CurrentPiece;
// check destination is empty
if (i_Board.GameBoard[i_Move.ToRow, i_Move.ToCol].CurrentPiece == null)
{
if (pieceToBeCaptured != null)
{
if (pieceToBeCaptured.r_Side == MoveValidator.GetOtherSide(this.Side))
{
return(true);
}
}
}
}
return(false);
}
// Adds all possible king moves to the given moves list
private void addKingsMovesToList(Player i_Player, Board i_Board, List <Move> i_MovesList, ref bool capturePossible)
{
if (MoveValidator.IsSimpleMove(i_Player, i_Board, new Move(this.Location.Y, this.Location.X, this.Location.Y + 1, this.Location.X + 1)))
{
i_MovesList.Add(new Move(this.Location.Y, this.Location.X, this.Location.Y + 1, this.Location.X + 1));
}
if (MoveValidator.IsSimpleMove(i_Player, i_Board, new Move(this.Location.Y, this.Location.X, this.Location.Y - 1, this.Location.X + 1)))
{
i_MovesList.Add(new Move(this.Location.Y, this.Location.X, this.Location.Y - 1, this.Location.X + 1));
}
if (checkKingCapture(i_Board, -1, new Move(this.Location.Y, this.Location.X, this.Location.Y - 2, this.Location.X + 2)))
{
i_MovesList.Add(new Move(this.Location.Y, this.Location.X, this.Location.Y - 2, this.Location.X + 2));
capturePossible = true;
}
if (checkKingCapture(i_Board, 1, new Move(this.Location.Y, this.Location.X, this.Location.Y + 2, this.Location.X + 2)))
{
i_MovesList.Add(new Move(this.Location.Y, this.Location.X, this.Location.Y + 2, this.Location.X + 2));
capturePossible = true;
}
}
// Public Methods
public bool HasPossibleMoves(Player i_Player, Board i_CurrentBoard)
{
return(MoveValidator.IsPieceHaveMoves(i_CurrentBoard, this));
}
// Execute the given move, returns true if it was executed successfully
public void ExecuteMove(Move i_Move)
{
eMoveFeedback moveFeedback = eMoveFeedback.Failed;
Piece piece = m_Board.GameBoard[i_Move.FromRow, i_Move.FromCol].CurrentPiece;
if (piece != null)
{
// User chose simple move
if (MoveValidator.IsSimpleMove(CurrentPlayer, m_Board, i_Move))
{
// If the player can capture- the move fails (he must choose to capture)
if (MoveValidator.IsPlayerHasCapture(CurrentPlayer, m_Board))
{
moveFeedback = eMoveFeedback.FailedCouldCapture;
}
else
{
// If the moving piece is NOT a king
if (piece.IsKing == false)
{
// If tries to move in the opposite direction- the move fails
if (MoveValidator.IsMovingInValidDirection(CurrentPlayer, i_Move, piece) == false)
{
moveFeedback = eMoveFeedback.Failed;
}
else
{
m_Board.MovePiece(CurrentPlayer, piece, new Point(i_Move.ToRow, i_Move.ToCol));
moveFeedback = eMoveFeedback.Success;
}
}
// moving piece is a king
else
{
m_Board.MovePiece(CurrentPlayer, piece, new Point(i_Move.ToRow, i_Move.ToCol));
moveFeedback = eMoveFeedback.Success;
}
}
}
// User chose capture move
else if (MoveValidator.IsCaptureMovePossible(CurrentPlayer, m_Board, i_Move))
{
Player enemyPlayer = CurrentPlayer == PlayerOne ? PlayerTwo : PlayerOne;
m_Board.MoveCapturingPiece(CurrentPlayer, enemyPlayer, piece, new Point(i_Move.ToRow, i_Move.ToCol));
moveFeedback = eMoveFeedback.Success;
// check double capture option
if (MoveValidator.CanPieceCapture(m_Board, m_Board.GameBoard[i_Move.ToRow, i_Move.ToCol].CurrentPiece))
{
moveFeedback = eMoveFeedback.CanDoubleCapture;
}
}
}
if (moveFeedback == eMoveFeedback.Success)
{
m_TurnCount++;
}
// Notify listeners of move execution completed
MoveExecuted?.Invoke(moveFeedback);
}